// Copyright 2015 Microsoft Corporation. All rights reserved.
// This code is governed by the license found in the LICENSE file.

/*---
description: Math.Log2 with sample values.
es6id: 20.2.2.23
---*/

function Test() {
    assert.sameValue(Math.log2(-0), Number.NEGATIVE_INFINITY,
      "Math.log2 produces incorrect output for -0");
    assert.sameValue(Math.log2(+0), Number.NEGATIVE_INFINITY,
      "Math.log2 produces incorrect output for +0");
    assert.sameValue(Math.log2(-0.9), NaN,
      "Math.log2 produces incorrect output for -0.9");
    assert.sameValue(Math.log2(NaN), NaN,
      "Math.log2 produces incorrect output for NaN");
    assert.sameValue(Math.log2(-10), NaN,
      "Math.log2 produces incorrect output for -10");
    assert.sameValue(Math.log2(-Infinity), NaN,
      "Math.log2 produces incorrect output for -Infinity");
    assert.sameValue(Math.log2(null), Number.NEGATIVE_INFINITY,
      "Math.log2 produces incorrect output for null");
    assert.sameValue(Math.log2(undefined), NaN,
      "Math.log2 produces incorrect output for undefined");
    assert.sameValue(Math.log2(Number.POSITIVE_INFINITY), Number.POSITIVE_INFINITY,
      "Math.log2 produces incorrect output for Number.POSITIVE_INFINITY");
    assert.sameValue(Math.log2(1), 0,
      "Math.log2 produces incorrect output for 1");
    assert.sameValue(Math.log2(2.00), 1,
      "Math.log2 produces incorrect output for 2.00");
    assert.sameValue(Math.log2(4.00), 2,
      "Math.log2 produces incorrect output for 4.00");
    assert.sameValue(Math.log2(8.00), 3,
      "Math.log2 produces incorrect output for 8.00");
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
